▎ 摘　　要

NOVELTY - The method comprises (i) mixing ammonium polyphosphate with pentaerythritol and placing in mixing tank of mixer under 30 revolutions/minute (rpm) for 3-5 minutes, adding water and emulsifier OP-10 into mixing tank, stirring under 300-500 rpm, adding toughener into mixing tank, stirring under 50-100 rpm for 5-10 minutes, adding surfactant in 3-5 times during stirring, and stirring evenly to obtain mixture, (ii) transferring mixture to mold, adding mold in oven for foam molding, taking out mold and removing mold to obtain a phenolic board, cutting prepared phenolic board to remove phenolic board, rubbing upper and lower surface of board and modifying, and sanding cut surface and polishing to remove burrs, burrs and surface dust, so that surface is smooth, and a treated phenolic board is obtained, (iii) preparing graphene oxide using Hummers method, (iv) placing high-purity phosphating graphite raw material in an acidic solution at a weight ratio of 1:2-5, stirring and immersing. USE - The method is useful for preparing high-performance graphene complex phenolic cover plate. ADVANTAGE - The graphene has excellent heat dissipation performance, and the drilling can effectively reduce heat generation, improve the accuracy of drilling, reduce burrs, and lower the temperature of the drill bit. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) high-performance graphene complex phenolic cover prepared by above mentioned the method comprising the high-performance graphene complex phenolic cover plate is composed of a phenolic plate and a graphene coating; and (2) use of a high-performance graphene complex phenolic cover plate of a high-performance graphene complex phenolic cover plate comprising (a) perforating on the high-performance graphene complex phenolic cover plate, (b) connecting two high-performance graphene complex phenolic cover plates through a connecting column, which penetrates through the phenolic plate thickness and flush with the upper and lower surfaces of the phenolic board, and (c) bonding the combined phenolic board to the wall. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart illustrating the method for preparing high-performance graphene complex phenolic cover plate (Drawing includes non-English language text).